Yokosuka power station

From Global Energy Monitor

Yokosuka power station (横須賀発電所) is a proposed 1,300-megawatt (MW) coal-fired power station in Kanagawa Prefecture, Japan.


The undated satellite photo below shows Tepco's oil- and gas-fired Yokosuka thermal power station in the city of Yokosuka. The new power station is planned at this site. Satellite photography from Planet shows construction occurring between June 2020 and December 2020.

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In 2014, TEPCO and J-Power proposed a 1,000 MW coal-fired power station in the city of Yokosuka, with a planned operation date of 2020.[1] It will be constructed at the site of Tepco's Yokosuka oil-fired power plant, which has been taken offline because of its age.[2]

According to the Kiko Network, the unit would be 650 MW. It is under EIA assessment and planned for operation in 2023.[3]

In April 2016, TEPCO said it was adding another 650 MW unit to the plant, also under permit review and planned for operation in 2024. J-Power is no longer listed as a sponsor.[4] The plant is sponsored by Jera, the JV formed in 2015 between TEPCO and Chubu Electric Power.[5]

In January 2018, the Draft Environmental Impact Assessment for the project was submitted by JERA, a joint subsidiary of TEPCO and Chubu Electric.[6]

In April 2019, JERA's president stated that the company was still committed to building the plant despite the cancellation of several proposed coal plants in Japan and recent divestment from coal by numerous Japanese banks.[7]

The EIS process was completed in February 2019.[8] According to the Kiko Network and news reports the plant construction of the plant had begun as of December 2019.[9]

According to Beyond Coal Japan, the units are planned to come online in 2023 and 2024.[10]


Financial closure for the plant was reached in February 2019. According to IJGlobal (subscription required)[11], two loans totaling US$2,460.76 million were provided to the project sponsors by Development Bank of Japan and a consortium of Japanese commercial banks comprising Mizuho Bank, MUFG Bank, Sumitomo Mitsui Banking Corporation, Juroko Bank and Nanto Bank.



In March 2019, the Tokyo District Court heard arguments in a lawsuit filed by 48 residents calling for the plant's environmental permit be revoked on the grounds that it would contribute to global warming, damage public health, and reduce yields for fishers.[12]

In September 2021, litigation was still underway. In an oral argument, plaintiffs argued that the assessment of the power plant in had not been fully considered for environmental consideration and should be cancelled. In addition, they pointed out that alternatives such as natural thermal power and renewable energy were not considered in the planning, and that the impact on the hot effluent fishery had not been investigated.[13]


In April 2021, young climate activists protested at the plant arguing that it was necessary for Japan to phase out coal power to be successful in the fight against climate change.[14]

Environmental impact

A 2018 report by Greenpeace Japan and No Coal Tokyo Bay found that operating the Yokosuka plant would lead to the early death of 90 people a year, and lead to an increase in bronchitis and asthma among children. The report found that 43 schools and 20 schools are located within 10 km of the plant.[15]

Project Details

  • Sponsor: JERA
  • Parent company: TEPCO and Chubu Electric Power
  • Location: Yokosuka city, Kanagawa Prefecture, Japan
  • Coordinates: 35.215556, 139.716389 (exact)
  • Status: Construction
  • Capacity: 1,300 MW (Units 1 & 2: 650 MW)
  • Type: Ultra-supercritical
  • Start date: Unit 1: 2023; Unit 2: 2024
  • Coal Type:
  • Coal Source:
  • Source of financing: US$2,460.76 million in debt from Development Bank of Japan, Mizuho Bank, MUFG Bank, Sumitomo Mitsui Banking Corporation, Juroko Bank and Nanto Bank[11]

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